Marantz SR7500/A1B Service Manual page 20

11. Click Close button to close the application.
12. Disconnect Mains power cord.
13. Turn off the internal switch that has been turned on at
step 3.
14. Turn on the unit.
Firmware Version Check
To check the versions of the fi rmware, see "Microprocessor
(CPU), DSP Version and FLD Segment Check Mode" in
"SERVICE MODE" section.
h82505_38400.inf
11. Close
12.
13. 3
14.
"SERVICE MODE"
Version and FLD Segment Check Mode"
18
SW10
"Microprocessor (CPU), DSP